Starbrite Fabric Waterproofing with PTEFStarbrite Fabric Waterproofing with PTEF effectively protects marine fabrics from water damage and UV rays. This versatile solution works on boat covers, bimini tops, car covers, tents, and foul weather gear. Simply spray the fabric and let it dry for six hours. Perfect for both restoring old materials and protecting new ones, this waterproofing treatment extends fabric life and maintains water repellency. Available in 22 oz bottles or gallon containers, it's essential to apply outdoors while using proper respiratory protection.Features: For boat covers, bimini tops, sail covers, clothing and tents.; Safe for use on all marine fabrics; Does not change the color or feel of fabric.; Coverage: 22 oz - approximately 80 square feet; 1 Gallon - approximately 465 square feet; How to Use Starbrite Waterproofing with PTEF: If surface to be waterproofed is dirty or stained, clean it with Starbrite Sail & Canvas Cleaner. Fabric to be treated must be dry.; Apply enough Waterproofing with sprayer, brush or sponge to thoroughly wet top surface. Take care to avoid overspray, drips or penetration onto surfaces not being treated.; Allow treated item to dry for 6 hours before using. Do not fold or store treated item until dry. Use only in a well ventilated area.; *Note: If your fabric indicates it is laminated, coated, or backed, do not use this product. It is recommended to use Starbrite's Water-Based waterproofing for those applications.